Synthesis of single phase cubic Al-substituted Li7La3Zr2O12 by solid state lithiation of mixed hydroxides

被引：41

作者：

Langer, Frederieke ^{[1
]}

Glenneberg, Jens ^{[1
]}

Bardenhagen, Ingo ^{[2
]}

Kun, Robert ^{[1
,2
]}

机构：

[1] Univ Bremen, Innovat Sensor & Funct Mat Res Grp, D-28359 Bremen, Germany

[2] Fraunhofer Inst Mfg Technol & Adv Mat IFAM, D-28359 Bremen, Germany

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2015年 / 645卷

关键词：

Garnet-type oxide; Lithium solid electrolyte; Solid state battery; Precipitation; Li-ion conductivity; LI; ELECTROLYTE; CONDUCTIVITY; TEMPERATURE; STABILIZATION; DECOMPOSITION; CONDUCTORS; COMPLEXES; ALUMINUM; GARNETS;

D O I：

10.1016/j.jallcom.2015.03.209

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Substituted Li7La3Zr2O12 (LLZ) with cubic garnet type structure is a promising candidate for solid state electrolyte in all-solid-state batteries. Here we present a novel synthesis route to obtain single phase cubic Al-substituted LLZ. The two step method consists of a co-precipitation of metal hydroxides from aqueous solution as well as solid-state lithiation and crystallization of the dried precipitate. Morphology and chemical composition of precipitated particles were investigated with SEM and EDS. Phase composition of calcined powder was confirmed to be pure phase cubic LLZ via XRD. The temperature dependent lithium ion conduction of a sintered pellet was determined to be 6.3 10(-5) Slcm at 353 K with an activation energy of 0.58 eV. (C) 2015 Elsevier B.V. All rights reseived.

引用

收藏

页码：64 / 69

页数：6

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